Hey - It's my first post, so go easy on me! I've searched through the forum but couldn't find anyone with a similar problem, so here goes...
I've just bought a Sapphire Ultimate X800GTO (silent series). This card comes with the R480 core. I'm using ATITool 0.24 and I am trying to overclock, but it's just not half the result I was expecting. I can only get to Core - 450 / 570 - Mem before artefacts start visibly showing in the test window. (Yellow squares if I push the core, yellow triangles if I push the memory).
I have been reading folk getting 550 on the core easily! As far as I can tell, everything is in order. I'm using the newest Catalyst and the temp goes up to 55C when running tests.
Is this the lamest overclock ever? Anybody got any ideas on how I can push the card further, or am I stuck with it?